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Amazon [amazon.com] has 10-Lbs. Oxbow Essentials Adult Guinea Pig Food Pellets on sale: 2 for $ 22.59 when you ‘clip’ the 40% discount coupon, add 2 bags to cart, and check out with Subscribe & Save. Shipping is free with Prime or $ 25+ orders.

This deal stacks three discounts: a 40% off coupon, a Subscribe & Save discount, and a multibuy discount.